- added lchmod

 - fixed up errno values for mknod
 - split up stat tests into test_stat, test_stat_chmod, test_stat_mknod

5 files changed, 416 insertions, 444 deletions

diff --git a/tests/stat/output.txt b/tests/stat/output.txt
deleted file mode 100644
index 1e6ae74e..00000000
--- a/tests/stat/output.txt
+++ /dev/null
@@ -1,202 +0,0 @@
---stat FOLDER--
-ret: 0
-errno: 0
-st_dev: 1
-st_ino: 2
-st_mode: 040777
-st_nlink: 1
-st_rdev: 0
-st_size: 4096
-st_atime: 1200000000
-st_mtime: 1200000000
-st_ctime: 1200000000
-st_blksize: 4096
-st_blocks: 1
-S_ISBLK: 0
-S_ISCHR: 0
-S_ISDIR: 1
-S_ISFIFO: 0
-S_ISREG: 0
-S_ISLNK: 0
-S_ISSOCK: 0
-
---stat FILE--
-ret: 0
-errno: 0
-st_dev: 1
-st_ino: 3
-st_mode: 0100777
-st_nlink: 1
-st_rdev: 0
-st_size: 6
-st_atime: 1200000000
-st_mtime: 1200000000
-st_ctime: 1200000000
-st_blksize: 4096
-st_blocks: 1
-S_ISBLK: 0
-S_ISCHR: 0
-S_ISDIR: 0
-S_ISFIFO: 0
-S_ISREG: 1
-S_ISLNK: 0
-S_ISSOCK: 0
-
---stat DEVICE--
-ret: 0
-errno: 0
-st_dev: 5
-st_ino: 5
-st_mode: 020777
-st_nlink: 1
-st_rdev: 5
-st_size: 0
-st_atime: 1200000000
-st_mtime: 1200000000
-st_ctime: 1200000000
-st_blksize: 4096
-st_blocks: 0
-S_ISBLK: 0
-S_ISCHR: 1
-S_ISDIR: 0
-S_ISFIFO: 0
-S_ISREG: 0
-S_ISLNK: 0
-S_ISSOCK: 0
-
---stat LINK--
-ret: 0
-errno: 0
-st_dev: 1
-st_ino: 3
-st_mode: 0100777
-st_nlink: 1
-st_rdev: 0
-st_size: 6
-st_atime: 1200000000
-st_mtime: 1200000000
-st_ctime: 1200000000
-st_blksize: 4096
-st_blocks: 1
-S_ISBLK: 0
-S_ISCHR: 0
-S_ISDIR: 0
-S_ISFIFO: 0
-S_ISREG: 1
-S_ISLNK: 0
-S_ISSOCK: 0
-
---lstat LINK--
-ret: 0
-errno: 0
-st_dev: 1
-st_ino: 4
-st_mode: 0120777
-st_nlink: 1
-st_rdev: 0
-st_size: 4
-st_atime: 1200000000
-st_mtime: 1200000000
-st_ctime: 1200000000
-st_blksize: 4096
-st_blocks: 1
-S_ISBLK: 0
-S_ISCHR: 0
-S_ISDIR: 0
-S_ISFIFO: 0
-S_ISREG: 0
-S_ISLNK: 1
-S_ISSOCK: 0
-
---fstat FILE--
-ret: 0
-errno: 0
-st_dev: 1
-st_ino: 3
-st_mode: 0100777
-st_nlink: 1
-st_rdev: 0
-st_size: 6
-st_atime: 1200000000
-st_mtime: 1200000000
-st_ctime: 1200000000
-st_blksize: 4096
-st_blocks: 1
-S_ISBLK: 0
-S_ISCHR: 0
-S_ISDIR: 0
-S_ISFIFO: 0
-S_ISREG: 1
-S_ISLNK: 0
-S_ISSOCK: 0
-
---chmod FILE--
-ret: 0
-errno: 0
-st_mode: 0100222
-st_mtime changed: 1
-
---fchmod FILE--
-ret: 0
-errno: 0
-st_mode: 0100777
-st_mtime changed: 1
-
---chmod FOLDER--
-ret: 0
-errno: 0
-st_mode: 040555
-st_mtime changed: 1
-
---chmod LINK--
-ret: 0
-errno: 0
-st_mode: 0100000
-
---mkdir--
-ret: 0
-errno: 0
-st_mode: 040777
-S_ISBLK: 0
-S_ISCHR: 0
-S_ISDIR: 1
-S_ISFIFO: 0
-S_ISREG: 0
-S_ISLNK: 0
-S_ISSOCK: 0
-
---mknod FILE--
-ret: 0
-errno: 0
-st_mode: 0100777
-S_ISBLK: 0
-S_ISCHR: 0
-S_ISDIR: 0
-S_ISFIFO: 0
-S_ISREG: 1
-S_ISLNK: 0
-S_ISSOCK: 0
-
---mknod FOLDER--
-ret: 0
-errno: 0
-st_mode: 040777
-S_ISBLK: 0
-S_ISCHR: 0
-S_ISDIR: 1
-S_ISFIFO: 0
-S_ISREG: 0
-S_ISLNK: 0
-S_ISSOCK: 0
-
---mknod FIFO--
-ret: -1
-errno: 22
-
---mknod DEVICE--
-ret: -1
-errno: 22
-
---mkfifo--
-ret: -1
-errno: 30
diff --git a/tests/stat/src.c b/tests/stat/src.c
deleted file mode 100644
index dc5a0198..00000000
--- a/tests/stat/src.c
+++ /dev/null
@@ -1,242 +0,0 @@
-/*
-Note: Hardcoded st_ino values etc. may change with minor changes to the library impl.
-      In such an event, we will need to update output.txt here.
-*/
-
-#include <stdio.h>
-#include <string.h>
-#include <errno.h>
-#include <fcntl.h>
-#include <sys/stat.h>
-
-int main() {
-  struct stat s;
-
-  printf("--stat FOLDER--\n");
-  printf("ret: %d\n", stat("/test", &s));
-  printf("errno: %d\n", errno);
-  printf("st_dev: %lu\n", s.st_dev);
-  printf("st_ino: %lu\n", s.st_ino);
-  printf("st_mode: 0%o\n", s.st_mode);
-  printf("st_nlink: %d\n", s.st_nlink);
-  printf("st_rdev: %lu\n", s.st_rdev);
-  printf("st_size: %ld\n", s.st_size);
-  printf("st_atime: %ld\n", s.st_atime);
-  printf("st_mtime: %ld\n", s.st_mtime);
-  printf("st_ctime: %ld\n", s.st_ctime);
-  printf("st_blksize: %ld\n", s.st_blksize);
-  printf("st_blocks: %ld\n", s.st_blocks);
-  printf("S_ISBLK: %d\n", S_ISBLK(s.st_mode));
-  printf("S_ISCHR: %d\n", S_ISCHR(s.st_mode));
-  printf("S_ISDIR: %d\n", S_ISDIR(s.st_mode));
-  printf("S_ISFIFO: %d\n", S_ISFIFO(s.st_mode));
-  printf("S_ISREG: %d\n", S_ISREG(s.st_mode));
-  printf("S_ISLNK: %d\n", S_ISLNK(s.st_mode));
-  printf("S_ISSOCK: %d\n", S_ISSOCK(s.st_mode));
-  memset(&s, 0, sizeof s);
-
-  printf("\n--stat FILE--\n");
-  printf("ret: %d\n", stat("/test/file", &s));
-  printf("errno: %d\n", errno);
-  printf("st_dev: %lu\n", s.st_dev);
-  printf("st_ino: %lu\n", s.st_ino);
-  printf("st_mode: 0%o\n", s.st_mode);
-  printf("st_nlink: %d\n", s.st_nlink);
-  printf("st_rdev: %lu\n", s.st_rdev);
-  printf("st_size: %ld\n", s.st_size);
-  printf("st_atime: %ld\n", s.st_atime);
-  printf("st_mtime: %ld\n", s.st_mtime);
-  printf("st_ctime: %ld\n", s.st_ctime);
-  printf("st_blksize: %ld\n", s.st_blksize);
-  printf("st_blocks: %ld\n", s.st_blocks);
-  printf("S_ISBLK: %d\n", S_ISBLK(s.st_mode));
-  printf("S_ISCHR: %d\n", S_ISCHR(s.st_mode));
-  printf("S_ISDIR: %d\n", S_ISDIR(s.st_mode));
-  printf("S_ISFIFO: %d\n", S_ISFIFO(s.st_mode));
-  printf("S_ISREG: %d\n", S_ISREG(s.st_mode));
-  printf("S_ISLNK: %d\n", S_ISLNK(s.st_mode));
-  printf("S_ISSOCK: %d\n", S_ISSOCK(s.st_mode));
-  memset(&s, 0, sizeof s);
-
-  printf("\n--stat DEVICE--\n");
-  printf("ret: %d\n", stat("/test/device", &s));
-  printf("errno: %d\n", errno);
-  printf("st_dev: %lu\n", s.st_dev);
-  printf("st_ino: %lu\n", s.st_ino);
-  printf("st_mode: 0%o\n", s.st_mode);
-  printf("st_nlink: %d\n", s.st_nlink);
-  printf("st_rdev: %lu\n", s.st_rdev);
-  printf("st_size: %ld\n", s.st_size);
-  printf("st_atime: %ld\n", s.st_atime);
-  printf("st_mtime: %ld\n", s.st_mtime);
-  printf("st_ctime: %ld\n", s.st_ctime);
-  printf("st_blksize: %ld\n", s.st_blksize);
-  printf("st_blocks: %ld\n", s.st_blocks);
-  printf("S_ISBLK: %d\n", S_ISBLK(s.st_mode));
-  printf("S_ISCHR: %d\n", S_ISCHR(s.st_mode));
-  printf("S_ISDIR: %d\n", S_ISDIR(s.st_mode));
-  printf("S_ISFIFO: %d\n", S_ISFIFO(s.st_mode));
-  printf("S_ISREG: %d\n", S_ISREG(s.st_mode));
-  printf("S_ISLNK: %d\n", S_ISLNK(s.st_mode));
-  printf("S_ISSOCK: %d\n", S_ISSOCK(s.st_mode));
-  memset(&s, 0, sizeof s);
-
-  printf("\n--stat LINK--\n");
-  printf("ret: %d\n", stat("/test/link", &s));
-  printf("errno: %d\n", errno);
-  printf("st_dev: %lu\n", s.st_dev);
-  printf("st_ino: %lu\n", s.st_ino);
-  printf("st_mode: 0%o\n", s.st_mode);
-  printf("st_nlink: %d\n", s.st_nlink);
-  printf("st_rdev: %lu\n", s.st_rdev);
-  printf("st_size: %ld\n", s.st_size);
-  printf("st_atime: %ld\n", s.st_atime);
-  printf("st_mtime: %ld\n", s.st_mtime);
-  printf("st_ctime: %ld\n", s.st_ctime);
-  printf("st_blksize: %ld\n", s.st_blksize);
-  printf("st_blocks: %ld\n", s.st_blocks);
-  printf("S_ISBLK: %d\n", S_ISBLK(s.st_mode));
-  printf("S_ISCHR: %d\n", S_ISCHR(s.st_mode));
-  printf("S_ISDIR: %d\n", S_ISDIR(s.st_mode));
-  printf("S_ISFIFO: %d\n", S_ISFIFO(s.st_mode));
-  printf("S_ISREG: %d\n", S_ISREG(s.st_mode));
-  printf("S_ISLNK: %d\n", S_ISLNK(s.st_mode));
-  printf("S_ISSOCK: %d\n", S_ISSOCK(s.st_mode));
-  memset(&s, 0, sizeof s);
-
-  printf("\n--lstat LINK--\n");
-  printf("ret: %d\n", lstat("/test/link", &s));
-  printf("errno: %d\n", errno);
-  printf("st_dev: %lu\n", s.st_dev);
-  printf("st_ino: %lu\n", s.st_ino);
-  printf("st_mode: 0%o\n", s.st_mode);
-  printf("st_nlink: %d\n", s.st_nlink);
-  printf("st_rdev: %lu\n", s.st_rdev);
-  printf("st_size: %ld\n", s.st_size);
-  printf("st_atime: %ld\n", s.st_atime);
-  printf("st_mtime: %ld\n", s.st_mtime);
-  printf("st_ctime: %ld\n", s.st_ctime);
-  printf("st_blksize: %ld\n", s.st_blksize);
-  printf("st_blocks: %ld\n", s.st_blocks);
-  printf("S_ISBLK: %d\n", S_ISBLK(s.st_mode));
-  printf("S_ISCHR: %d\n", S_ISCHR(s.st_mode));
-  printf("S_ISDIR: %d\n", S_ISDIR(s.st_mode));
-  printf("S_ISFIFO: %d\n", S_ISFIFO(s.st_mode));
-  printf("S_ISREG: %d\n", S_ISREG(s.st_mode));
-  printf("S_ISLNK: %d\n", S_ISLNK(s.st_mode));
-  printf("S_ISSOCK: %d\n", S_ISSOCK(s.st_mode));
-  memset(&s, 0, sizeof s);
-
-  printf("\n--fstat FILE--\n");
-  printf("ret: %d\n", fstat(open("/test/file", O_RDONLY, 0777), &s));
-  printf("errno: %d\n", errno);
-  printf("st_dev: %lu\n", s.st_dev);
-  printf("st_ino: %lu\n", s.st_ino);
-  printf("st_mode: 0%o\n", s.st_mode);
-  printf("st_nlink: %d\n", s.st_nlink);
-  printf("st_rdev: %lu\n", s.st_rdev);
-  printf("st_size: %ld\n", s.st_size);
-  printf("st_atime: %ld\n", s.st_atime);
-  printf("st_mtime: %ld\n", s.st_mtime);
-  printf("st_ctime: %ld\n", s.st_ctime);
-  printf("st_blksize: %ld\n", s.st_blksize);
-  printf("st_blocks: %ld\n", s.st_blocks);
-  printf("S_ISBLK: %d\n", S_ISBLK(s.st_mode));
-  printf("S_ISCHR: %d\n", S_ISCHR(s.st_mode));
-  printf("S_ISDIR: %d\n", S_ISDIR(s.st_mode));
-  printf("S_ISFIFO: %d\n", S_ISFIFO(s.st_mode));
-  printf("S_ISREG: %d\n", S_ISREG(s.st_mode));
-  printf("S_ISLNK: %d\n", S_ISLNK(s.st_mode));
-  printf("S_ISSOCK: %d\n", S_ISSOCK(s.st_mode));
-  memset(&s, 0, sizeof s);
-
-  printf("\n--chmod FILE--\n");
-  printf("ret: %d\n", chmod("/test/file", 0200));
-  printf("errno: %d\n", errno);
-  stat("/test/file", &s);
-  printf("st_mode: 0%o\n", s.st_mode);
-  printf("st_mtime changed: %d\n", s.st_mtime != 1200000000l);
-  memset(&s, 0, sizeof s);
-
-  printf("\n--fchmod FILE--\n");
-  printf("ret: %d\n", fchmod(open("/test/file", O_WRONLY, 0777), 0777));
-  printf("errno: %d\n", errno);
-  stat("/test/file", &s);
-  printf("st_mode: 0%o\n", s.st_mode);
-  printf("st_mtime changed: %d\n", s.st_mtime != 1200000000l);
-  memset(&s, 0, sizeof s);
-
-  printf("\n--chmod FOLDER--\n");
-  printf("ret: %d\n", chmod("/test", 0400));
-  printf("errno: %d\n", errno);
-  stat("/test", &s);
-  printf("st_mode: 0%o\n", s.st_mode);
-  printf("st_mtime changed: %d\n", s.st_mtime != 1200000000l);
-  memset(&s, 0, sizeof s);
-
-  printf("\n--chmod LINK--\n");
-  printf("ret: %d\n", chmod("/test/link", 0000));
-  printf("errno: %d\n", errno);
-  stat("/test/file", &s);
-  printf("st_mode: 0%o\n", s.st_mode);
-  memset(&s, 0, sizeof s);
-
-  // Make sure we can create stuff in the root.
-  chmod("/", 0777);
-
-  printf("\n--mkdir--\n");
-  printf("ret: %d\n", mkdir("/test-mkdir", 0777));
-  printf("errno: %d\n", errno);
-  stat("/test-mkdir", &s);
-  printf("st_mode: 0%o\n", s.st_mode);
-  printf("S_ISBLK: %d\n", S_ISBLK(s.st_mode));
-  printf("S_ISCHR: %d\n", S_ISCHR(s.st_mode));
-  printf("S_ISDIR: %d\n", S_ISDIR(s.st_mode));
-  printf("S_ISFIFO: %d\n", S_ISFIFO(s.st_mode));
-  printf("S_ISREG: %d\n", S_ISREG(s.st_mode));
-  printf("S_ISLNK: %d\n", S_ISLNK(s.st_mode));
-  printf("S_ISSOCK: %d\n", S_ISSOCK(s.st_mode));
-  memset(&s, 0, sizeof s);
-
-  printf("\n--mknod FILE--\n");
-  printf("ret: %d\n", mknod("/test-mknod-file", S_IFREG | 0777, 0));
-  printf("errno: %d\n", errno);
-  stat("/test-mknod-file", &s);
-  printf("st_mode: 0%o\n", s.st_mode);
-  printf("S_ISBLK: %d\n", S_ISBLK(s.st_mode));
-  printf("S_ISCHR: %d\n", S_ISCHR(s.st_mode));
-  printf("S_ISDIR: %d\n", S_ISDIR(s.st_mode));
-  printf("S_ISFIFO: %d\n", S_ISFIFO(s.st_mode));
-  printf("S_ISREG: %d\n", S_ISREG(s.st_mode));
-  printf("S_ISLNK: %d\n", S_ISLNK(s.st_mode));
-  printf("S_ISSOCK: %d\n", S_ISSOCK(s.st_mode));
-  memset(&s, 0, sizeof s);
-
-  printf("\n--mknod FOLDER--\n");
-  printf("ret: %d\n", mknod("/test-mknod-dir", S_IFDIR | 0777, 0));
-  printf("errno: %d\n", errno);
-  stat("/test-mknod-dir", &s);
-  printf("st_mode: 0%o\n", s.st_mode);
-  printf("S_ISBLK: %d\n", S_ISBLK(s.st_mode));
-  printf("S_ISCHR: %d\n", S_ISCHR(s.st_mode));
-  printf("S_ISDIR: %d\n", S_ISDIR(s.st_mode));
-  printf("S_ISFIFO: %d\n", S_ISFIFO(s.st_mode));
-  printf("S_ISREG: %d\n", S_ISREG(s.st_mode));
-  printf("S_ISLNK: %d\n", S_ISLNK(s.st_mode));
-  printf("S_ISSOCK: %d\n", S_ISSOCK(s.st_mode));
-  memset(&s, 0, sizeof s);
-
-  printf("\n--mknod FIFO--\n");
-  printf("ret: %d\n", mknod("/test-mknod-fifo", S_IFIFO | 0777, 0));
-  printf("errno: %d\n", errno);
-
-  printf("\n--mknod DEVICE--\n");
-  printf("ret: %d\n", mknod("/test-mknod-device", S_IFCHR | 0777, 123));
-  printf("errno: %d\n", errno);
-
-  printf("\n--mkfifo--\n");
-  printf("ret: %d\n", mkfifo("/test-mkfifo", 0777));
-  printf("errno: %d\n", errno);
-
-  return 0;
-}
diff --git a/tests/stat/test_chmod.c b/tests/stat/test_chmod.c
new file mode 100644
index 00000000..94e6c12b
--- /dev/null
+++ b/tests/stat/test_chmod.c
@@ -0,0 +1,153 @@
+#include <assert.h>
+#include <dirent.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <utime.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+
+void create_file(const char *path, const char *buffer, int mode) {
+  int fd = open(path, O_WRONLY | O_CREAT | O_EXCL, mode);
+  assert(fd >= 0);
+
+  int err = write(fd, buffer, sizeof(char) * strlen(buffer));
+  assert(err ==  (sizeof(char) * strlen(buffer)));
+
+  close(fd);
+}
+
+void setup() {
+  create_file("file", "abcdef", 0777);
+  symlink("file", "file-link");
+  // some platforms use 777, some use 755 by default for symlinks
+  // make sure we're using 777 for the test
+  lchmod("file-link", 0777);
+  mkdir("folder", 0777);
+}
+
+void cleanup() {
+  unlink("file-link");
+  unlink("file");
+  rmdir("folder");
+}
+
+void test() {
+  int err;
+  int lastctime;
+  struct stat s;
+  
+  //
+  // chmod a file
+  //
+  // get the current ctime for the file
+  memset(&s, 0, sizeof s);
+  stat("file", &s);
+  lastctime = s.st_ctime;
+  sleep(1);
+
+  // do the actual chmod
+  err = chmod("file", 0200);
+  assert(!err);
+
+  memset(&s, 0, sizeof s);
+  stat("file", &s);
+#if USE_OLD_FS
+  assert(s.st_mode == (0222 | S_IFREG));
+#else
+  assert(s.st_mode == (0200 | S_IFREG));
+#endif
+  assert(s.st_ctime != lastctime);
+
+  //
+  // fchmod a file
+  //
+  lastctime = s.st_ctime;
+  sleep(1);
+
+  err = fchmod(open("file", O_WRONLY), 0100);
+  assert(!err);
+
+  memset(&s, 0, sizeof s);
+  stat("file", &s);
+#if USE_OLD_FS
+  assert(s.st_mode == (0000 | S_IFREG));
+#else
+  assert(s.st_mode == (0100 | S_IFREG));
+#endif
+  assert(s.st_ctime != lastctime);
+
+  //
+  // chmod a folder
+  //
+  // get the current ctime for the folder
+  memset(&s, 0, sizeof s);
+  stat("folder", &s);
+  lastctime = s.st_ctime;
+  sleep(1);
+
+  // do the actual chmod
+  err = chmod("folder", 0300);
+  assert(!err);
+  memset(&s, 0, sizeof s);
+  stat("folder", &s);
+#if USE_OLD_FS
+  assert(s.st_mode == (0222 | S_IFDIR));
+#else
+  assert(s.st_mode == (0300 | S_IFDIR));
+#endif
+  assert(s.st_ctime != lastctime);
+
+  //
+  // chmod a symlink's target
+  //
+  err = chmod("file-link", 0400);
+  assert(!err);
+
+  // make sure the file it references changed
+  stat("file-link", &s);
+#if USE_OLD_FS
+  assert(s.st_mode == (0555 | S_IFREG));
+#else
+  assert(s.st_mode == (0400 | S_IFREG));
+#endif
+
+  // but the link didn't
+  lstat("file-link", &s);
+  assert(s.st_mode == (0777 | S_IFLNK));
+
+  //
+  // chmod the actual symlink
+  //
+  err = lchmod("file-link", 0500);
+  assert(!err);
+
+  // make sure the file it references didn't change
+  stat("file-link", &s);
+#if USE_OLD_FS
+  assert(s.st_mode == (0555 | S_IFREG));
+#else
+  assert(s.st_mode == (0400 | S_IFREG));
+#endif
+
+  // but the link did
+  lstat("file-link", &s);
+#if USE_OLD_FS
+  assert(s.st_mode == (0555 | S_IFLNK));
+#else
+  assert(s.st_mode == (0500 | S_IFLNK));
+#endif
+
+  puts("success");
+}
+
+int main() {
+  atexit(cleanup);
+  signal(SIGABRT, cleanup);
+  setup();
+  test();
+  return EXIT_SUCCESS;
+}
\ No newline at end of file
diff --git a/tests/stat/test_mknod.c b/tests/stat/test_mknod.c
new file mode 100644
index 00000000..4cff57d9
--- /dev/null
+++ b/tests/stat/test_mknod.c
@@ -0,0 +1,96 @@
+#include <assert.h>
+#include <dirent.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <utime.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+
+void setup() {
+  mkdir("folder-readonly", 0555);
+}
+
+void cleanup() {
+  unlink("mknod-file");
+  unlink("mknod-device");
+  rmdir("folder");
+  rmdir("folder-readonly");
+}
+
+void test() {
+  int err;
+  struct stat s;
+
+  //
+  // mknod
+  // mknod is _extremely_ unportable for anything other
+  // than a FIFO. so, the tests are disabled when running
+  // natively as they'd be utterly inconsistent.
+  //
+#if EMSCRIPTEN
+
+  // mknod a folder
+  err = mknod("mknod-folder", S_IFDIR | 0777, 0);
+  assert(err);
+  assert(errno == EINVAL);
+
+  // mknod fifo
+  err = mknod("mknod-fifo", S_IFIFO | 0777, 0);
+  assert(err);
+  assert(errno == EPERM);
+
+  // mknod a file
+  err = mknod("mknod-file", S_IFREG | 0777, 0);
+  assert(!err);
+  memset(&s, 0, sizeof s);
+  stat("mknod-file", &s);
+  assert(S_ISREG(s.st_mode));
+
+  // mknod a character device
+  err = mknod("mknod-device", S_IFCHR | 0777, 123);
+#if USE_OLD_FS
+  assert(err);
+  assert(errno == EPERM);
+#else
+  assert(!err);
+  memset(&s, 0, sizeof s);
+  stat("mknod-device", &s);
+  assert(S_ISCHR(s.st_mode));
+#endif
+
+#endif
+
+  //
+  // mkdir
+  //
+  // can't mkdir in a readonly dir
+  err = mkdir("folder-readonly/subfolder", 0777);
+  assert(err);
+  assert(errno == EACCES);
+
+  // regular creation
+  err = mkdir("folder", 0777);
+  assert(!err);
+  memset(&s, 0, sizeof s);
+  stat("folder", &s);
+  assert(S_ISDIR(s.st_mode));
+
+  // try to re-create the same folder
+  err = mkdir("folder", 0777);
+  assert(err);
+  assert(errno == EEXIST);
+
+  puts("success");
+}
+
+int main() {
+  atexit(cleanup);
+  signal(SIGABRT, cleanup);
+  setup();
+  test();
+  return EXIT_SUCCESS;
+}
\ No newline at end of file
diff --git a/tests/stat/test_stat.c b/tests/stat/test_stat.c
new file mode 100644
index 00000000..14e88370
--- /dev/null
+++ b/tests/stat/test_stat.c
@@ -0,0 +1,167 @@
+#include <assert.h>
+#include <dirent.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <utime.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+
+void create_file(const char *path, const char *buffer, int mode) {
+  int fd = open(path, O_WRONLY | O_CREAT | O_EXCL, mode);
+  assert(fd >= 0);
+
+  int err = write(fd, buffer, sizeof(char) * strlen(buffer));
+  assert(err ==  (sizeof(char) * strlen(buffer)));
+
+  close(fd);
+}
+
+void setup() {
+  struct utimbuf t = {1200000000, 1200000000};
+  
+  mkdir("folder", 0777);
+  create_file("folder/file", "abcdef", 0777);
+  symlink("file", "folder/file-link");
+
+  utime("folder/file", &t);
+  utime("folder", &t);
+}
+
+void cleanup() {
+  unlink("folder/file");
+  unlink("folder/file-link");
+  rmdir("folder");
+}
+
+void test() {
+  int err;
+  struct stat s;
+
+  // stat a folder
+  memset(&s, 0, sizeof(s));
+  err = stat("folder", &s);
+  assert(!err);
+  assert(s.st_dev);
+  assert(s.st_ino);
+  assert(S_ISDIR(s.st_mode));
+  assert(s.st_nlink);
+  assert(s.st_rdev == 0);
+  assert(s.st_size);
+  assert(s.st_atime == 1200000000);
+  assert(s.st_mtime == 1200000000);
+  assert(s.st_ctime);
+#ifdef EMSCRIPTEN
+  assert(s.st_blksize == 4096);
+  assert(s.st_blocks == 1);
+#endif
+
+  // stat a file
+  memset(&s, 0, sizeof(s));
+  err = stat("folder/file", &s);
+  assert(!err);
+  assert(s.st_dev);
+  assert(s.st_ino);
+  assert(S_ISREG(s.st_mode));
+  assert(s.st_nlink);
+  assert(s.st_rdev == 0);
+  assert(s.st_size == 6);
+  assert(s.st_atime == 1200000000);
+  assert(s.st_mtime == 1200000000);
+  assert(s.st_ctime);
+#if EMSCRIPTEN
+  assert(s.st_blksize == 4096);
+  assert(s.st_blocks == 1);
+#endif
+
+  // fstat a file (should match file stat from above)
+  memset(&s, 0, sizeof(s));
+  err = fstat(open("folder/file", O_RDONLY), &s);
+  assert(!err);
+  assert(s.st_dev);
+  assert(s.st_ino);
+  assert(S_ISREG(s.st_mode));
+  assert(s.st_nlink);
+  assert(s.st_rdev == 0);
+  assert(s.st_size == 6);
+  assert(s.st_atime == 1200000000);
+  assert(s.st_mtime == 1200000000);
+  assert(s.st_ctime);
+#if EMSCRIPTEN
+  assert(s.st_blksize == 4096);
+  assert(s.st_blocks == 1);
+#endif
+
+  // stat a device
+  memset(&s, 0, sizeof(s));
+  err = stat("/dev/null", &s);
+  assert(!err);
+  assert(s.st_dev);
+  assert(s.st_ino);
+  assert(S_ISCHR(s.st_mode));
+  assert(s.st_nlink);
+#if !USE_OLD_FS
+  // old FS doesn't store proper device ids
+#ifndef __APPLE__
+  // mac uses makedev(3, 2) for /dev/null
+  assert(s.st_rdev == makedev(1, 3));
+#endif
+#endif
+  assert(!s.st_size);
+  assert(s.st_atime);
+  assert(s.st_mtime);
+  assert(s.st_ctime);
+#if EMSCRIPTEN
+  assert(s.st_blksize == 4096);
+  assert(s.st_blocks == 0);
+#endif
+
+  // stat a link (should match the file stat from above)
+  memset(&s, 0, sizeof(s));
+  err = stat("folder/file-link", &s);
+  assert(!err);
+  assert(s.st_dev);
+  assert(s.st_ino);
+  assert(S_ISREG(s.st_mode));
+  assert(s.st_nlink);
+  assert(s.st_rdev == 0);
+  assert(s.st_size == 6);
+  assert(s.st_atime == 1200000000);
+  assert(s.st_mtime == 1200000000);
+  assert(s.st_ctime);
+#if EMSCRIPTEN
+  assert(s.st_blksize == 4096);
+  assert(s.st_blocks == 1);
+#endif
+
+  // lstat a link (should NOT match the file stat from above)
+  memset(&s, 0, sizeof(s));
+  err = lstat("folder/file-link", &s);
+  assert(!err);
+  assert(s.st_dev);
+  assert(s.st_ino);
+  assert(S_ISLNK(s.st_mode));
+  assert(s.st_nlink);
+  assert(s.st_rdev == 0);
+  assert(s.st_size == 4);  // strlen("file")
+  assert(s.st_atime != 1200000000);  // should NOT match the utime call we did for dir/file
+  assert(s.st_mtime != 1200000000);
+  assert(s.st_ctime);
+#if EMSCRIPTEN
+  assert(s.st_blksize == 4096);
+  assert(s.st_blocks == 1);
+#endif
+
+  puts("success");
+}
+
+int main() {
+  atexit(cleanup);
+  signal(SIGABRT, cleanup);
+  setup();
+  test();
+  return EXIT_SUCCESS;
+}
\ No newline at end of file